/Engine/Source/Runtime/Engine/Classes/Engine/AssetManager.h
Returns list of PrimaryAssetIds that manage a package. Will optionally recurse up the management chain
virtual bool GetPackageManagers ( [FName](API\Runtime\Core\UObject\FName) PackageName, bool bRecurseToParents, [TSet](API\Runtime\Core\Containers\TSet)< [FPrimaryAssetId](API\Runtime\CoreUObject\UObject\FPrimaryAssetId) > & ManagerSet ) const